Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

GOODWILL - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
GOODWILL - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2004	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill impairment loss	$ 1,800		$ 1,764	$ 0
MV Corp.
Goodwill [Line Items]
Goodwill acquired		$ 11,900